Stephen Johnson shared this photo on Sept. 28, 2012, of an "old abandoned mining building" near Central City. He wrote: "The stone walls were falling apart and the wood roof was nearly gone. Still from inside there was a great view of the changing aspen."

Matthew Marhias, of Franktown, shared this photo on Oct. 3, 2012, of a photo he took on Dunkley Pass. He wrote: "I pulled over to take this shot and my granddaughter Grace exclaimed, "firetrees!" I thought it was a fitting name."

Georgetown Loop Railroad In 2012

Doug Peters of Golden took this photo on the Georgetown Loop Railroad on Sept. 29, 2012.